CVE-2015-6435: Cisco Firepower Extensible Operating System

Critical severity, CVSS 9.8. EPSS: 8.7% chance of exploitation in the next 30 days.

An unspecified CGI script in Cisco FX-OS before 1.1.2 on Firepower 9000 devices and Cisco Unified Computing System (UCS) Manager before 2.2(4b), 2.2(5) before 2.2(5a), and 3.0 before 3.0(2e) allows remote attackers to execute arbitrary shell commands via a crafted HTTP request, aka Bug ID CSCur90888.

Affected products

• Cisco Firepower Extensible Operating System: version 1.1(1.86) only; version 1.1(1.160) only; version 1.1.1 only
• Cisco Unified Computing System: version 1.0(2k) only; version 1.0_base only; version 1.1(1m) only; version 1.1_base only; version 1.2(1d) only; version 1.2_base only; …

Published 2016-01-22. Last modified 2026-06-17.